switch(string)

[David Ferenczi]

The following code gives the following compilation error:

Error: case must be a string or an integral constant, not BAR1
Error: case must be a string or an integral constant, not BAR2

--------------------------8<------------------------------------
int main(string[] args)
{
    string BAR1 = "bar1";
    string BAR2 = "bar2";
    string myString = "bar3";

    switch (myString)
    {
        case BAR1:
            break;

        case BAR2:
            break;

        defualt:
            break;
    }

    return 0;
}
--------------------------8<------------------------------------

Can somebody explain me why?

Thanks,
David